/* 联系 */
#contact {
  --contact-err: #ef7a68; /* 表单错误色，见回报：建议主会话加进 tokens */
  --contact-field-h: 48px;
  --contact-chip-pad: 14px;
  border-top: 1px solid var(--line);
}
#contact .contact-grid { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: clamp(40px, 6vw, 96px); align-items: start; }
#contact .contact-nb { display: inline-block; }
#contact .hl-lead { max-width: 26em; }

#contact .contact-ways { margin: 48px 0 0; }
#contact .contact-ways[hidden], #contact .contact-next[hidden] { display: none; }
#contact .contact-ways div { display: grid; grid-template-columns: 136px 1fr; gap: 12px; padding: 16px 0; border-top: 1px solid var(--line); }
#contact .contact-ways dt { font-size: 15px; color: var(--ink-2); }
#contact .contact-ways dd { margin: 0; font-size: 15px; color: var(--ink-1); overflow-wrap: anywhere; }
#contact .contact-ways a { color: inherit; text-decoration: underline; text-decoration-color: var(--line-strong); text-underline-offset: 4px;
  transition: text-decoration-color .2s var(--ease); }
#contact .contact-ways a:hover { text-decoration-color: var(--amber); }

/* 提交以后：三步，细线分隔，琥珀色序号 */
#contact .contact-next { margin: 48px 0 0; }
#contact .contact-next-t { font-size: var(--fs-label); color: var(--ink-3); letter-spacing: .02em; padding-bottom: 14px; }
#contact .contact-next-list { list-style: none; margin: 0; padding: 0; }
#contact .contact-next-list li { display: grid; grid-template-columns: 36px minmax(0, 1fr); align-items: baseline; padding: 16px 0; border-top: 1px solid var(--line); }
#contact .contact-next-n { font-size: 14px; color: var(--amber); font-variant-numeric: tabular-nums; }
#contact .contact-next-list p { font-size: 16px; line-height: 1.7; color: var(--ink-1); }
#contact .contact-addr { display: grid; grid-template-columns: 36px minmax(0, 1fr); align-items: baseline; padding: 16px 0; border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line); font-size: 15px; color: var(--ink-2); }
#contact .contact-addr span { grid-column: auto; font-size: 13px; color: var(--ink-3); }
#contact .contact-ways:not([hidden]) + .contact-next + .contact-addr { grid-template-columns: 136px 1fr; gap: 12px; }
#contact .contact-ways:not([hidden]) + .contact-next + .contact-addr span { font-size: 15px; color: var(--ink-2); }

/* 表单面板 */
#contact .contact-panel { padding: clamp(24px, 3vw, 40px); border-radius: var(--r-panel); background: var(--bg-raised); border: 1px solid var(--line); }
#contact .contact-form { display: grid; gap: 26px; }
#contact .contact-form[hidden] { display: none; }
#contact .contact-row--2 { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
#contact .contact-field { min-width: 0; margin: 0; padding: 0; border: 0; display: grid; gap: 8px; align-content: start; }
#contact .contact-field > label, #contact .contact-field > legend, #contact .contact-label-row label { font-size: 14px; font-weight: 560; color: var(--ink-1); padding: 0; }
#contact .contact-field > legend { margin-bottom: 8px; }
#contact .contact-opt { margin-left: 6px; font-weight: 400; font-size: 13px; color: var(--ink-3); }
#contact .contact-label-row { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; }
#contact .contact-count { font-size: 13px; color: var(--ink-3); font-variant-numeric: tabular-nums; }
#contact .contact-count.is-low { color: var(--amber); }

#contact input[type="text"], #contact input[type="tel"], #contact input[type="email"], #contact textarea {
  width: 100%; min-width: 0; height: var(--contact-field-h); padding: 0 14px; border-radius: var(--r-btn); border: 1px solid var(--line-strong);
  background: var(--bg); color: var(--ink-1); font-size: 16px; outline: none;
  transition: border-color 0.2s var(--ease), box-shadow 0.2s var(--ease), background-color 0.2s var(--ease); }
#contact textarea { height: auto; min-height: 136px; padding: 12px 14px; line-height: 1.7; resize: vertical; }
#contact input::placeholder, #contact textarea::placeholder { color: var(--ink-3); }
#contact input:hover, #contact textarea:hover { border-color: #4a515a; }
#contact input:focus, #contact textarea:focus { border-color: var(--amber); box-shadow: 0 0 0 3px var(--amber-soft); background-color: #101215; outline: none; }
#contact .is-bad input[type="text"], #contact .is-bad input[type="tel"], #contact .is-bad input[type="email"], #contact .is-bad textarea { border-color: var(--contact-err); }
#contact .contact-err { font-size: 13px; color: var(--contact-err); min-height: 0; }
#contact .contact-err:empty { display: none; }
#contact .contact-hint { font-size: 13px; color: var(--ink-3); }

/* 单选分段 + 多选标签：真实的 input，键盘可用 */
#contact .contact-seg, #contact .contact-chips { display: flex; flex-wrap: wrap; gap: 8px; }
#contact .contact-seg { margin-bottom: 4px; }
#contact .contact-seg label, #contact .contact-chips label { position: relative; cursor: pointer; }
#contact .contact-seg input, #contact .contact-chips input { position: absolute; opacity: 0; width: 1px; height: 1px; pointer-events: none; }
#contact .contact-seg span, #contact .contact-chips span { position: relative; display: inline-flex; align-items: center; gap: 8px; height: 38px; padding: 0 var(--contact-chip-pad); border-radius: var(--r-btn);
  border: 1px solid var(--line-strong); font-size: 14px; color: var(--ink-2); user-select: none;
  transition: border-color 0.2s var(--ease), background-color 0.2s var(--ease), color 0.2s var(--ease); }
/* 多选：方框 + 选中时一笔勾（缩放进场约 180ms） */
#contact .contact-chips span::before { content: ""; flex: none; width: 14px; height: 14px; box-sizing: border-box; border-radius: 3px; border: 1px solid var(--ink-4);
  transition: background-color 0.18s var(--ease), border-color 0.18s var(--ease); }
#contact .contact-chips span::after { content: ""; position: absolute; left: calc(var(--contact-chip-pad) + 2.5px); top: 50%; width: 7px; height: 4px; margin-top: -4px;
  border-left: 2px solid var(--amber-ink); border-bottom: 2px solid var(--amber-ink);
  transform: rotate(-45deg) scale(0.2); opacity: 0; transform-origin: 30% 70%;
  transition: transform 0.2s var(--ease), opacity 0.12s linear; }
#contact .contact-seg label:hover span, #contact .contact-chips label:hover span { border-color: var(--ink-3); color: var(--ink-1); }
#contact .contact-seg input:checked + span { background-color: var(--ink-1); border-color: var(--ink-1); color: var(--bg); }
#contact .contact-chips input:checked + span { border-color: var(--amber); color: var(--ink-1); background-color: var(--amber-soft); }
#contact .contact-chips input:checked + span::before { background-color: var(--amber); border-color: var(--amber); }
#contact .contact-chips input:checked + span::after { transform: rotate(-45deg) scale(1); opacity: 1; }
#contact .contact-seg input:focus-visible + span, #contact .contact-chips input:focus-visible + span { outline: 2px solid var(--amber); outline-offset: 2px; }

/* 蜜罐：移出画面 */
#contact .contact-trap { position: absolute; left: -10000px; width: 1px; height: 1px; overflow: hidden; }

/* 底部：三段进度 + 提交 */
#contact .contact-foot { display: flex; align-items: flex-end; justify-content: space-between; gap: 24px; padding-top: 22px; border-top: 1px solid var(--line); }
#contact .contact-progress { flex: 1; max-width: 320px; margin: 0; padding: 0; list-style: none; display: grid; grid-template-columns: repeat(3, 1fr); gap: 6px; }
#contact .contact-progress li { font-size: 13px; color: var(--ink-3); }
#contact .contact-progress li > span:last-child { display: block; margin-top: 8px; }
#contact .contact-bar { display: block; height: 3px; border-radius: 2px; background: var(--line); overflow: hidden; }
#contact .contact-bar i { display: block; height: 100%; width: 100%; background: var(--amber); transform-origin: left; transform: scaleX(var(--p, 0)); transition: transform 0.4s var(--ease); }
#contact .contact-progress li.is-full .contact-bar i { --p: 1; background: var(--ink-3); }
#contact .contact-progress li.is-full { color: var(--ink-2); }
#contact .contact-progress li.is-going { color: var(--ink-1); }
#contact .contact-progress--done li.is-now { color: var(--ink-1); }
#contact .contact-progress--done li.is-now .contact-bar i { background: var(--amber); }

/* 提交按钮：发送中显示文字 + 按钮底部一条不带数字的进行线 */
#contact .contact-submit { position: relative; overflow: hidden; min-width: 148px; justify-content: center; transition: background-color 0.15s var(--ease), transform 0.12s var(--ease); }
#contact .contact-submit:disabled { cursor: progress; }
#contact .contact-submit.is-sending, #contact .contact-submit.is-sending:hover { background: #d9d7d0; border-color: #d9d7d0; }
#contact .contact-submit:active { transform: translateY(1px); }
#contact .contact-submit-line { position: absolute; left: 0; right: 0; bottom: 0; height: 3px; overflow: hidden;
  background: rgba(14, 16, 18, 0.12); opacity: 0; transition: opacity 0.15s linear; }
#contact .contact-submit-line::after { content: ""; position: absolute; top: 0; bottom: 0; left: 0; width: 34%; background: var(--amber);
  transform: translateX(-100%); }
#contact .contact-submit.is-sending .contact-submit-line { opacity: 1; }
#contact .contact-submit.is-sending .contact-submit-line::after { animation: contact-line 1.15s cubic-bezier(0.65, 0, 0.35, 1) infinite; }
@keyframes contact-line { from { transform: translateX(-100%); } to { transform: translateX(265%); } }

#contact .contact-status:empty { display: none; }
#contact .contact-status { padding: 12px 14px; border-radius: var(--r-btn); font-size: 14px; line-height: 1.7; color: var(--ink-1);
  border: 1px solid var(--contact-err); background: rgba(239, 122, 104, 0.08); }

/* 成功：对勾一笔画出（stroke-dashoffset，约 500ms），编号和深圳时间 */
#contact .contact-done { display: grid; gap: 18px; padding: 8px 0; outline: none; }
#contact .contact-done[hidden] { display: none; }
#contact .contact-done .contact-progress { max-width: 360px; margin-bottom: 14px; }
#contact .contact-done-head { display: grid; grid-template-columns: 52px minmax(0, 1fr); gap: 18px; align-items: center; }
#contact .contact-tick { width: 52px; height: 52px; display: block; fill: none; }
#contact .contact-tick-ring { stroke: var(--line-strong); stroke-width: 1.5; }
#contact .contact-tick-mark { stroke: var(--amber); stroke-width: 3; stroke-linecap: round; stroke-linejoin: round;
  stroke-dasharray: 1; stroke-dashoffset: 1; }
#contact .contact-done.is-drawn .contact-tick-mark { stroke-dashoffset: 0; transition: stroke-dashoffset 0.5s cubic-bezier(0.65, 0, 0.35, 1) 0.22s; }
#contact .contact-done h3 { font-size: var(--fs-h3); line-height: 1.35; }
#contact .contact-ref { margin-left: 2px; font-family: var(--mono); font-weight: 400; color: var(--amber); letter-spacing: 0.04em; }
#contact .contact-done-time { margin-top: 4px; font-size: 14px; color: var(--ink-3); }
#contact .contact-done-time span { margin-left: 4px; font-family: var(--mono); color: var(--ink-1); font-variant-numeric: tabular-nums; }
#contact .contact-done-note { color: var(--ink-2); max-width: 30em; }
#contact .contact-done .hl-btn { justify-self: start; margin-top: 6px; }

@media (max-width: 960px) {
  #contact .contact-grid { grid-template-columns: 1fr; }
  #contact .contact-ways { margin-top: 32px; }
}
@media (max-width: 560px) {
  #contact .contact-row--2 { grid-template-columns: 1fr; gap: 26px; }
  #contact .contact-ways div { grid-template-columns: 1fr; gap: 2px; padding: 12px 0; }
  #contact .contact-panel { padding: 22px 16px; margin: 0 calc(var(--pad) * -0.4); }
  #contact .contact-foot { flex-direction: column; align-items: stretch; }
  #contact .contact-progress { max-width: none; }
  #contact .contact-submit { width: 100%; }
  #contact .contact-seg span, #contact .contact-chips span { height: 40px; }
  #contact { --contact-chip-pad: 12px; }
}
@media (prefers-reduced-motion: reduce) {
  /* 所有过渡瞬切；发送线静止显示；对勾直接画好 */
  #contact *, #contact *::before, #contact *::after { transition: none !important; animation: none !important; }
  #contact .contact-submit.is-sending .contact-submit-line::after { transform: none; width: 100%; opacity: 0.5; }
  #contact .contact-done.is-drawn .contact-tick-mark { stroke-dashoffset: 0; }
}